Avalanche forecast

Jasper

Feb 27 – 28, 2019Parks Canada
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Archived · expired 8 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
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Highlights

Watch for a slight increase in snowpack reactivity on solar aspects Wednesday, as temperatures creep up closer to seasonal norms.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–1.5
    Watch out for pockets of windslab in the alpine from previous SW switching to Northerly winds

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–1.5
    Isolated to steep terrain where surface snow doesn't show signs of previous wind affect.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely
    Size
    1.5–2.5
    Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places.

Weather Forecast

Cold, clear and dry conditions as the arctic air rules supreme over our region.Wednesday will be sunny with cloudy periods, alpine  high -9 C, Low -22 C, and LNE ridge winds.Mountain weather forecast available at Avalanche Canada.

Snowpack Summary

The upper snowpack continues to lose cohesion from facetting. Wind effect is visible in open terrain from previous SW switching to N winds. The Jan 18 layer (down 40cm) has faceted away in most places, but shows isolated sensitivity at treeline and below in the Icefields region. The midpack is mainly supportive, over depth hoar in shallow areas.

Avalanche Summary

No avalanches were observed in the Eastern part of the park today.  No activity has been reported around the Icefields for several days.

Confidence

Due to the number and quality of field observations

Regions covered